This particular book seems to be a compilation of different traders, their markets and their methodologies.
It's probably an interesting read (especially if you take public transportation and have time on your hands), however, Adrienne Toghraie did it first and did it better.
You could probably gleen more than this book has to offer by reading an interacting with a few of the better threads here.
As far as commenting on Dr Elder's trading methodologies ... the guy makes his money writing books on trading and giving seminars - HELLO!
Best,
Jimmy